38 lines
1.5 KiB
C++
38 lines
1.5 KiB
C++
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#ifndef OSRM_ENGINE_GUIDANCE_VERBOSITY_REDUCTION_HPP_
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#define OSRM_ENGINE_GUIDANCE_VERBOSITY_REDUCTION_HPP_
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#include "engine/guidance/route_step.hpp"
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#include "util/attributes.hpp"
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#include <vector>
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namespace osrm
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{
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namespace engine
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{
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namespace guidance
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{
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// Name changes on roads are posing relevant information. However if they are short, we don't want
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// to announce them. All these that are not collapsed into a single turn (think segregated
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// intersection) have to be checked for the length they are active in. If they are active for a
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// short distance only, we don't announce them
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OSRM_ATTR_WARN_UNUSED
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std::vector<RouteStep> suppressShortNameSegments(std::vector<RouteStep> steps);
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// remove use lane information that is not actually a turn. For post-processing, we need to
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// associate lanes with every turn. Some of these use-lane instructions are not required after lane
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// anticipation anymore. This function removes all use lane instructions that are not actually used
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// anymore since all lanes going straight are used anyhow.
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// FIXME this is currently only a heuristic. We need knowledge on which lanes actually might become
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// turn lanes. If a straight lane becomes a turn lane, this might be something to consider. Right
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// now we bet on lane-anticipation to catch this.
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OSRM_ATTR_WARN_UNUSED
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std::vector<RouteStep> collapseUseLane(std::vector<RouteStep> steps);
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} // namespace guidance
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} // namespace engine
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} // namespace osrm
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#endif /* OSRM_ENGINE_GUIDANCE_VERBOSITY_REDUCTION_HPP_ */
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